Rewinding apparatus

ABSTRACT

This invention relates to rewind machines having a main frame, a web supply roll, rewind roll means, a horizontal slideway, a backup roll and a plurality of slitting assemblies adjustably mounted on the slideway adjacent the backup roll, each of the slitting assemblies being characterized by a cutting element, apparatus for adjusting the vertical position of the cutting element, vernier apparatus for adjusting the lateral position of the cutting element and apparatus for oscillating the cutting element.

United States Patent [15] 3,682,031 [451 Aug. 8, 1972 Degelleke et al.

[54] REWINDING APPARATUS [72] Inventors: Gerrit Degelleke, Parsippany; Robert E. Bush, Morris Plains, both of NJ.

[73] Assignee: Midland-Ros Corporation, Cleveland, Ohio 22] Filed: June 29, 1970 [21] Appl. No.: 50,784

[52] U.S. Cl. ..83/433, 83/481, 83/505,

83/700, 242/562 [51] Int. Cl. ..B26d H10 [58] Field of Search ..83/425, 433, 434, 481, 491, 83/509, 505, 700; 242/562, 56.4, 56.5, 56.7

[56] References Cited UNITED STATES PATENTS 3,441,232 4/1969 Diebold et al. ..83/433 x Smith ..83/509 2,224,070 12/ 1940 Walter ..83/433 2,728,393 l2/ 1955 Brooks ..83/434 X 2,282,909 5/ 1942 Thiersch et al. ..242/56.4

Primary Examiner-Donald R. Schran Assistant Examiner-James F. Coan Atz0rney-Ward, McElhannon, Brooks & Fitzpatrick [57] ABSTRACT This invention relates to rewind machines having a main frame, a web supply roll, rewind roll means, a horizontal. slideway, a backup roll and a plurality of slitting assemblies adjustably mounted on the slideway adjacent the backup roll, each of the slitting assemblies being characterized by a cutting element, apparatus for adjusting the vertical position of the cutting element, vemier apparatus for adjusting the lateral position of the cutting element and apparatus for oscillating the cutting element.

14 Claims, 8 Drawing Figures PATENTEDA B W 3.682.031

sum u or 5 INVENTORS 8 arlw/vsrs REWINDING APPARATUS This invention relates to improvements in slitting and rewind machines adapted to handle flexible sheet material. The invention relates more especially to the slitting mechanisms especially adapted for use with such machines.

In slitting and rewinding machines, a relatively wide web of flexible sheet material is received from a mill supply roll and continuously passed partially around a constant speed backup roll against which a plurality of spaced slitters operate to cut the web to the desired rewind width. Then, these cut widths pass to rewind rolls for winding thereon.

It is desirable to be able to operate a rewind machine with either razor slitters or with shear slitters, depending upon the particular process required at the time. Heretofore, the accepted practice was to oscillate the entire cutter bar, which entailed a separate cutter bar for razor cutters and a separate cutter bar for shear cutters. It was difficult and time-consuming to change from one setup to the other setup. Also, the resulting oscillation tended to be inaccurate with respect to the cutting groove, thereby causing irregular cutting. Moreover, it was difficult and time-consuming to change the slitting blade element.

The present invention involves a novel combination of features combined in such a way as to afford a very efficient solution to the difficulties encountered with the prior art, as will become apparent as the description proceeds.

In order to accomplish the desired results, we provide in combination with a rewind machine having a main frame, a web supply roll, rewind roll means, and a horizontal slideway mounted on the main frame and a grooved backup roll, a plurality of slitting assemblies which are adjustably mounted on the slideway adjacent the backup roll. Each of the slitting assemblies incorporates cutting means for longitudinally slitting a web. Means are provided for adjusting the vertical'position of the cutting means, and vernier means are provided for making fine adjustments to the lateral position of the cutting means. Further, means are provided for oscillating the cutting means.

In one form of the invention we provide a slitting as sembly which includes a bracket having upstanding side walls. A front eccentric hub pivot pin and a rear eccentric hub pivot pin are mounted on the side walls. A front eccentric hub is eccentrically mounted on the front pivot pin and the rear eccentric hub pivot pin is eccentrically mounted on the rear pivot pin. Plate means are mounted on the eccentric hub. A razor blade holder plate and a razor blade clamp plate serve to mount a razor blade therebetween, and a razor oscillating guide plate is fixedly attached to the razor blade holder plate. A spring serves to resiliently hold said razor blade holder against the plate means, and a vertically extending oscillating actuating plate is pivotally mounted on the plate means and carries a protruding locking pin. The razor blade holder plate has a vertically extending slot for receiving said locking pin and means are provided for oscillating the oscillating actuating plate. A lateral adjusting screw is mounted on one side of the bracket to engage the plate means, and a spring is mounted on the other side of the bracket for urging the plate means towards the lateral adjusting screw. An indicator block is mounted on the plate to the slideway. In addition, a vertical adjusting screw is provided which is attached to a vertical adjusting screw link bar, theother end of the bar being pivotally connected to the rear eccentric hub. A hub link plate has one end connected to the rear eccentric hub and has the other end thereof connected to the front eccentric hub so that movement of the vertical adjusting screw lowers or raises the plate means and thereby lowers or raises the razor blade, as desired.

There has thus been outlined rather broadly the more important features of the invention in order that the detailed description thereof that follows may be better understood, and in order that the present contribution to the art may be better appreciated. There are, of course, additional features of the invention that will be described hereinafter which will form the subject of the claims appended hereto. Those skilled in the art will appreciate that the conception on which this disclosure is based may readily be utilized as the basis for the designing of other structures for carrying out the several purposes of the invention. It is important, therefore, that this disclosure be regarded as including such equivalent constructions as do not depart from the spirit and scope of the invention.

One embodiment of the invention has been chosen for purposes of illustration and description, and is shown in the accompanying drawings, forming a part of the specification, wherein:

FIG. 1 is a side elevation of a rewind machine having a slitting mechanism constructed according to the concept of this invention;

FIG. 2 is an enlarged perspective view of the slitting mechanism;

FIG. 3 is an enlarged side elevation, partially in section, of the slitting mechanism;

FIG. 4 is an enlarged sectional view taken along the line indicated at 44 in FIG. 3;

FIG. 5 is an enlarged sectional view taken along the line indicated at 5-5 in FIG. 3, and with the oscillating means removed;

FIG. 6 is an enlarged plan view of the slitting mechanism;

FIG. 7 is a perspective view of a plurality of slitting mechanisms mounted on a rewind machine; and

FIG. 8 is a perspective view of a plurality of shear cutter wheels mounted on a rewind machine.

Referring more particularly to FIG. 1, a slitting and rewind machine, indicated generally at 10, includes a mill or supply roll 12 from which web 14 of flexible sheet material is continuously unwound and passed partially around a series of rolls, not shown, to a driven feed roll 16, and thence to a driven grooved backup roll 18 having a plurality of spaced grooves 19, FIG. 2, against which a plurality of slitting assemblies, indicated generally at 20, FIG. 1, cut the web into a plurality of elongated longitudinal strips or sub-webs 22 which are rewound on a rewind roll 24. The rewind machine further comprises a main frame, indicated generally at 26, upon which a horizontal slideway or dovetail bar 28 is mounted for pivotal movement as by means of a bracket 30 to which is attached a pneumatic piston and cylinder assembly 32 which has the other end thereof pivotally attached to the main frame, as at 34. Accordingly, pneumatic cylinder and piston assembly serves to control the movement of the horizontal slideway 28, and the slitting assembly and, thereby, controls the cutting position.

As best seen in FIGS. 2 and 3, the slitting assembly 20 comprises a bracket 36 which is longitudinally slidably mounted on the slideway 28. Set screws 38 are provided to secure the slitting assembly 20 to the slideway at preselected distances apart. The bracket 36, as seen in FIGS. 4 and 5, is of generally U-shaped configuration. It has upstanding side walls 40 which support a front eccentric hub pivot pin 42, FIG. 5, and

a rear eccentric hub pivot pin 44, FIG. 4. The front eccentric hub pivot pin is mounted in a bushing 46, FIG. 5, and is retained in position by means of a roll pin 48. A spring 50, acting against the bushing 46, serves to axially position a front eccentric hub 25. The rear eccentric hub pivot pin 44, FIG. 5, is mounted in a bushing 54 and is retained in position by means of a roll pin 56. A spring 58, acting against the bushing 54, serves to axially position a rear eccentric hub 60. The front eccentric hub 52, FIG. 5, is provided with hub shoulders 62 which support a right-hand plate 64 and a left-hand plate 66. The rear eccentric hub 60, FIG. 3, is also provided with hub shoulders 68, FIG. 3, which act in the same manner as hub shoulders 62. The right-hand plate 64 and the left-hand plate 66 are retained in their spaced relationship by means of a front spacer block 69, FIG. 3, and a rear spacer block 70.

Referring to FIGS. 2, 3 and 6, a razor blade or cutting member 72 is mounted against a razor blade holder plate 74, as by means of a razor blade clamp plate 76 and a screw 78, razor blade locating pins 80 serving to center and locate the blade.

A razor oscillating guide plate 82, FIGS. 3 and 6, is fixedly attached to the razor blade holder plate by means of screws 84, one being shown. As best seen in FIG. 5, the razor oscillating guide plate 82 is mounted in a horizontally extending recess 86 for reciprocating sliding movement, and a spring 88 is fixedly attached to the right-hand plate 64 as by means of screws 90 to urge the razor blade holder plate 74, FIG. 5, and hence the razor oscillating guide plate towards the left-hand plate 66. That is, in effect, the razor blade is resiliently secured between the right-hand plate and the left-hand plate, but is free for reciprocating horizontal-motion with respect thereto.

The horizontal reciprocating motion of the razor blade 72 is supplied by means of an oscillating actuating plate 92, FIG. 4, pivotally mounted on the left-hand plate 66, as by means of a pivot pin 94. A retaining plate 96 is fixedly attached to the oscillating actuating plate 92, as by means of a flat head screw 98 provided for the purpose. The oscillating actuating plate 92 oscillates the razor blade holder plate 74 by means of a locking pin assembly indicated generally at 100, which comprises a spring retaining housing 102 fixedly attached to the oscillating actuating plate 92 by means of screws 103. A locking pin 104 is mounted in the housing 102 and one end thereof extends outwardly into a vertical slot 106, FIG. 3, in the razor blade holder plate 74 for reciprocating same when the plate 92 is oscillated. The other end of the locking pin 104 carries a handle 108, FIG. 4. A spring 110 acts between the housing 102 and a shoulder 1 12 on the locking pin 104, thereby to urge the locking pin into the slot 106 in the plate 74. When it is desired to move the pin 104 from the slot 106 for purposes of replacing the razor blade, the handle 108 is moved to the left, as viewed in FIG. 4, while the spring 110 is being compressed. Release of the handle 108 allows the spring to re-engage the pin in the slot 106. As best seen in FIG. 2 the bottom of the oscillating actuating plate 92 is provided with a knob 114 which fits into a slot 116 in a transverse oscillating shaft 118. That is, the transverse oscillating shaft 118 extends across the machine and the knob 114 of each slitting assembly is thereby oscillated. A collar 120 is fixedly attached to one end of the shaft 1 l8 and an arm 122 extends therefrom. A pair of links 124 and 126 mechanically link the shaft 118 to an electric motor 128 so that rotation of the motor serves to oscillate the shaft and, thereby, oscillates the razor blades 72 carried by each slitting assembly 20.

Referring to FIG. 4, an adjusting screw 130 is threadedly mounted on the upstanding side walls 40 of the bracket 36 to engage the left-hand plate 66 thereby to laterally adjust the position of the razor blade 80. This, in effect, acts as a lateral vemier adjustment. That is, because the razor blade is fixedly mounted with respect to the right-hand plate 64 and the left-hand plate 66, lateral adjustment of the plates serves to laterally adjust the razor blade. As seen in FIG. 5, the right-hand plate 64 and the left-hand plate 66 are fixed with respect to each other by means of a slit strip width indicator block 132 which is fixedly attached to both plates by means of screws 134, provided for the purpose. Accordingly, springs 50 resiliently urge the righthand and hence the left-hand plate from right to left as viewed in FIG. 4 and the adjusting screw 130 serves as a variable stop to such movement thereby retaining the nozzle blade in its desired position. Referring to FIG. 5, the indicator block 132 is provided with indicator projections 136 which accurately indicate the exact position of the razor blade so that the width of the slit strips or webs can be measured directly adjacent the horizontal slideway 28, FIG. 7.

Referring to FIG. 3, vertical adjustment of the razor blade is made by means of a vertical adjusting screw 138 which passes through the front spacer block 68 and is fixedly connected to one end of a vertical adjusting screw link bar 140. The other end of the link bar is pivotally connected to the rear eccentric hub 60 as by means of a roll pin 142. One end of an eccentric hub link plate 144 is pivotally connected to the rear eccentric hub 60 by roll pin 146 and the other end of the plate 144 is pivotally connected to the front eccentric hub 52 by a roll pin 148 whereby movement of the ad justing screw 138 lowers or raises the right-hand plate and the left-hand plate due to the mounting thereof on an eccentric hubs. That is, the right-hand and left-hand plates are mounted on the eccentric hubs and the hubs are eccentrically mounted on the upstanding side walls 40 of the bracket 36. Because the razor blade is fixedly mounted with respect to the right-hand and left-hand plates, as discussed more fully hereinbefore, the razor blade is vertically positionable by movement of the ver tical adjusting screw 138. As seen in FIG. 3, vertical adjustment stop pins 147 mounted between the left-hand and right-hand plates serve to limit the travel of the front eccentric hub 52, thereby limiting the upward and downward movement of the razor blade. As best seen in FIGS. 2-4, the slitting assembly 20 is provided with a cover plate 149 for enclosing the assembly and adding rigidity thereto.

It will be appreciated that according to one aspect of this invention the slitting assembly may be readily removed and replaced by a shear cutter assembly, indicated generally at 150, FIG. 8. That is, the slitting assemblies 20, FIG. 7, may be removed from the horizontal slideway 28 by means of loosening the set screws 38, and the shear cutter assembly 150, FIG. 8, may be posi tioned and secured to the slideway 28 by means of set screws 152 so that the cutter rolls 154 are positioned adjacent a backup roll 18', thereby providing a simple and fast changeover operation as compared to prior art such machines.

It will thus be seen that the present invention does indeed provide an improved rewind machine which is superior in simplicity, accuracy and efficiency as compared to prior art such devices.

Although a certain particular embodiment of the invention is herein disclosed for purposes of explanation, various modifications thereof, after study of this specification, will be apparent to those skilled in the art to which the invention pertains.

What is claimed and desired to be secured by Letters Patent is:

1. In a rewind machine having a main frame, a web supply roll, rewind roll means, a horizontal slideway mounted on said main frame, a backup roll, the combination comprising a plurality of slitting assemblies being adjustably mounted on said slideway adjacent said backup roll, each of said slitting assemblies having cutting means, means for adjusting the vertical position of said cutting means, vernier means for adjusting the lateral position of said cutting means, and means for reciprocating said cutting means in linear motion during operation. I

2. In a rewind machine having a main frame, a web supply roll, rewind roll means, a horizontal slideway mounted on said main frame, a backup roll, the combination comprising a plurality of slitting assemblies adjustably mounted on said slideway adjacent said backup roll, each of said slitting assemblies including a bracket, a front eccentric hub pivot pin mounted on said bracket and a rear eccentric hub pivot pin mounted on said bracket, a front eccentric hub eccentrically mounted on said front eccentric hub pivot pin and a rear eccentric hub eccentrically mounted on said rear eccentric hub pivot pin, plate means mounted on said eccentric hubs, a razor blade mounted on said plate means, a vertical adjusting screw, a vertical adjusting screw link bar having one end connected to said vertical adjusting screw and the other end pivotally connected to said rear eccentric hub, a hub link plate having one end connected to said rear eccentric hub and having the other end connected to said front eccentric hub, movement of said vertical adjusting screw lowers or raises said plate means, thereby lowering or raising said razor blade.

3. Apparatus according to claim 2 further comprising a lateral adjusting screw mounted on said bracket to engage said plate means for laterally adjusting the position of said razor blade.

4. Apparatus according to claim 2 further comprising a fluid piston and cylinder assembly interposed between said slideway and said main frame to control pivotal movement of said slideway.

5. In a rewind machine having a main frame, a web supply roll, rewind roll means, a horizontal slideway mounted on said main frame, a backup roll, the combination comprising a plurality of slitting assemblies being adjustably mounted on said slideway adjacent said backup roll, each of said slitting assemblies incl uding a bracket, a front eccentric hub pivot pin mounted on said bracket and a rear eccentric hub pivot pin mounted on said bracket, a front eccentric hub eccentrically mounted on said front eccentric hub pivot pin and a rear eccentric hub eccentrically mounted on said rear eccentric hub pivot pin, a right-hand plate mounted on said eccentric hubs and a spaced left-hand plate mounted on said eccentric hubs, a razor blade,

means mounting said razor blade between said plates, a lateral adjusting screw mounted on one side of said bracket to engage said left-hand plate, a slit strip width indicator block fixedly interconnecting said left-hand plate to said right-hand plate, spring means mounted on the other side of said bracket for urging said plates toward said lateral adjusting screw, said indicator block having indicator projections disposed directly adjacent said horizontal slideway for indicating the position of said razor blade with respect to said slideway, a vertical adjusting screw passing through said front spacer block, a vertical adjusting screw link bar having one end connected to said vertical adjusting screw and the other end pivotally connected to said rear eccentric hub, a hub link plate having one end connected to said rear eccentric hub and having the other end connected to said front eccentric hub, movement of said vertical adjusting screw lowers or raises said right-hand and left-hand plates, thereby lowering or raising said razor blade.

6. In a rewind machine having a main frame, a web supply roll, rewind roll means, a horizontal slideway mounted on said main frame, a backup roll, the combination comprising a plurality of slitting assemblies being adjustably mounted on said slideway adjacent said backup roll, each of said slitting assemblies including a bracket, a front eccentric hub pivot pin mounted on said bracket and a rear eccentric hub pivot pin mounted on said bracket, a front eccentric hub eccentrically mounted on said front eccentric hub pivot pin and a rear eccentric hub eccentrically mounted on said rear eccentric hub pivot pin, a right-hand plate mounted on said eccentric hubs and a spaced left-hand plate mounted on said eccentric hubs, a razor blade, means mounting said razor blade between said plates, a vertically extending oscillating actuating plate pivotally mounted on said left-hand plate, means connecting said oscillating actuating plate to said means mounting said razor blade, a transversely extending oscillating shaft having a longitudinally extending slot, the bottom of said oscillating actuating plate having a knob fitable in said longitudinal extending slot, means for reciprocating said oscillating shaft, a vertical adjusting screw, a vertical adjusting screw link bar having one end connected to said vertical adjusting screw and the other end pivotally connected to said rear eccentric hub, a hub link plate having one ed connected to said rear eccentric hub and having the other end connected to said front eccentric hub, movement of said vertical adjusting screw lowers or raises said right-hand and left-hand plates, thereby lowering or raising said razor blade.

7. In a rewind machine having a main frame, a web supply roll, rewind roll means, a horizontal slideway mounted on said main frame, a backupvroll, the com bination comprising a plurality of slitting assemblies being adjustably mounted on said slideway adjacent said backup roll, each of said slitting assemblies including a bracket, a front eccentric hub pivot pin mounted on said bracket and a rear eccentric hub pivot pin,

mounted on said bracket, a front eccentric hub eccentrically mounted on said front eccentric hub pivot pin and a rear eccentric hub eccentrically mounted on said rear eccentric hub pivot pin, plate means mounted on said eccentric hubs, a razor blade, means mounting said razor blade on said plate means, a vertically extending oscillating actuating plate pivotally mounted on said plate means, means connecting said oscillating actuating plate to said means mounting said razor blade, a transversely extending oscillating shaft having a longitudinally extending slot, the bottom of said oscillating actuating plate having a knob fitable in said longitudinal extending slot, means for reciprocating said oscillating shaft, a lateral adjusting screw mounted on one side of said bracket to engage said plate means for laterally adjusting the position of said razor blade.

8. Apparatus according to claim 7 further comprising an indicator block mounted on said plate means and having indicator projections disposed directly adjacent said horizontal slideway for indicating the position of said razor blade with respect to said slideway.

9. In a rewind machine having a main frame, a web supply roll, rewind roll means, a horizontal slideway mounted on said main frame, a backup roll, the combination comprising a plurality of slitting assemblies being adjustably mounted on said slideway adjacent said backup roll, each of said slitting assemblies including a bracket, plate means mounted on said bracket, a razor blade, means mounting said razor blade on said plate means, a vertically extending oscillating actuating plate pivotally mounted on said plate means, a retaining plate fixedly attached to said oscillating actuating plate, said means mounting said razor bladehaving a vertically extending slot, a locking pin engageable in said slot, a housing fixedly attached to said oscillating actuating plate, said locking pin having a knob at the outside end thereof for removing said pin from said slot, spring means mounted in said housing for urging said pin into said slot, a transversely extending oscillating shaft having a longitudinally extending slot, the bottom of said oscillating actuating plate having a knob fitable in said longitudinal extending slot and means for reciprocating said oscillating shaft.

10. A slitting assembly comprising a bracket having upstanding side walls, a front eccentric hub pivot pin mounted on said side walls and a rear eccentric hub pivot pin mounted on said side walls, a front eccentric hub eccentrically mounted on said front eccentric hub pivot pin and a rear eccentric hub eccentrically mounted on said rear eccentric hub pivot pin, a right hand' plate mounted on said eccentric hubs and a spaced left-hand plate mounted on said eccentric hubs, a razor blade holder plate, a razor blade clamp plate, a

razor blade mounted between said razor blade holder plate and said razor blade clamp plate, a razor oscillating guide plate fixedly attached to said razor blade holder plate, said left-hand plate having a recess for receiving said razor oscillating guide plate for reciprocating sliding movement, a spring fixedly attached to said right-hand plate and resiliently engageable with said razor blade holder plate to urge said razor blade holder plate towards said left-hand plate, a vertically extending oscillating actuating plate pivotally mounted on said left-hand plate, said razor blade holder plate having a vertically extending slot, a locking pin engageable in said slot, means mounting said locking pin on said oscillating actuating plate, means for oscillating said oscillating actuating plate, a lateral adjusting screw mounted on one of said upstanding side walls to engage said left-hand plate, a slit strip width indicator block fixedly interconnecting said lefthand plate to said right'hand plate, spring means mounted on the other of said upstanding walls for urging said plates toward said lateral adjusting screw, said indicator block having indicator projections disposed directly adjacent said horizontal slideway for indicating the position of said razor blade with respect to said slideway, a vertical adjusting screw, a vertical adjusting screw link bar having one end connected to said vertical adjusting screw and the other end pivotally connected to said rear eccentric hub, a hub link plate having one end connected to said rear eccentric hub and having the other end connected to said front eccentric hub, movement of said vertical adjusting screw lowers or raises said right-hand and left-hand plates, thereby lowering or raising said razor blade.

11. In a rewind machine having a main frame, a web supply roll, rewind roll means, a horizontal slideway mounted on said main frame, a backup roll, the combination comprising a plurality of slitting assemblies being adjustably mounted on said slideway adjacent said backup roll, each of said slitting assemblies including a bracket having-upstanding side walls, a front eccentric hub pivot pin mounted on said side walls and a rear eccentric hub pivot pin mounted on said side walls, a front eccentric hub eccentrically mounted on said front eccentric hub pivot pin and a rear eccentric hub eccentrically mounted on said rear eccentric hub pivot pin, a right-hand plate mounted on said eccentric hubs and a spaced left-hand plate mounted on said eccentric hubs, a razor blade holder plate, a razor blade clamp plate, a razor blade mounted between said razor blade holder plate and said razor blade clamp plate, a razor oscillating guide plate fixedly attached to said razor blade holder plate, said left-hand plate having a recess for receiving said razor oscillating guide plate for reciprocating sliding movement, a spring fixedly attached to said right-hand plate and resiliently engageable with said razor blade holder plate to urge said razor blade holder plate towards said left-hand plate, a vertically extending oscillating actuating plate pivotally mounted on said left-hand plate, said razor blade holder plate having a vertically extending slot, a locking pin engageable in said slot, a housing fixedly attached to said oscillating actuating plate, said locking pin having a knob at the outside end thereof for removing said pin from said slot, spring means mounted in said housing for urging said pin into said slot, a transversely extending oscillating shaft having a longitudinally extending slot, the bottom of said oscillating actuating plate having a knob fitable in said longitudinal extending slot, a collar fixedly attached to said oscillating shaft, an electric motor, linkage means interconnecting said collar to said electric motor for reciprocating said oscillating shaft, a lateral adjusting screw mounted on one of said upstanding side walls to engage said left-hand plate, a slit strip width indicator block fixedly interconnecting said left-hand plate to said right-hand plate, spring means mounted on the other of said upstanding walls for urging said plates toward said lateral adjusting screw, said indicator block having indicator projections disposed directly adjacent said horizontal slideway for indicating the position of said razor blade with respect to said slideway, a" vertical adjusting screw passing through said front spacer block, a vertical adjusting screw link bar having one end connected to said vertical adjusting screw and the other end pivotally connected to said rear eccentric hub, a hub link plate having one end connected to said front eccentric hub and having the other end connected to holder plate, said left-hand plate having a recess for .receiving said razor oscillating guide plate for said front eccentric hub, movement of said vertical adjusting screw lowers or raises said right-hand and lefthand plates, thereby lowering or raising said razor blade.

12. In a rewind machine having a main frame, a web supply roll, rewind roll means, a horizontal slideway mounted for pivotal movement, a driven backup roll, the combination comprising a plurality of slitting assemblies being adjustably mounted on said slideway adjacent said backup roll, a fluid piston and cylinder as sembly interposed between said slideway and said frame to control the pivotal movement of said slideway, each of said slitting assemblies including a bracket having upstanding side walls, a front eccentric hub pivot pin mounted on said side walls and a rear eccentric hub pivot pin mounted on said side walls, a front eccentric hub eccentrically mounted on said front eccentric hub pivot pin and a rear eccentric hub eccentrically mounted on said rear eccentric hub pivot pin, a righthand plate mounted on said eccentric hubs and a spaced left-hand plate mounted on said eccentric hubs, a front spacer block interposed between said righthand and left-hand plates and a rear spacer block interposed between said right-hand and left-hand plates, a razor blade holder plate, a razor blade clamp plate, a razor blade mounted between said razor blade holder plate and said razor blade clamp plate, a razor oscillating guide plate fixedly attached to said razor blade reciprocating sliding movement, a spring fixedly attached to said right-hand plate and resiliently engageable with said razor blade holder plate to urge said razor blade holder plate towards said left-hand plate, a vertically extending oscillating actuating plate pivotally mounted on said left-hand plate, a retaining plate fixedly attached to said oscillating actuating plate, said razor blade holder plate having a vertically extending slot, a locking pin engageable in said slot, a housing fixedly attached to said oscillating actuating plate, said locking pin having a knob at the outside end thereof for removing said pin from said slot, spring means mounted in sai housin or ur' s 'd 'ni t s 'd slot,atr nsverse y extena ng os ciiFati iig a ing a long itudinally extending slot, the bottom of said oscillating actuating plate having a knob fitable in said longitudinal extending slot, a collar fixedly attached to said oscillating shaft, an electric motor, linkage means interconnecting said collar to said electric motor for reciprocating said oscillating shaft, a lateral adjusting screw mounted on one of said upstanding side walls to engage said left-hand plate, a slit strip width indicator block fixedly interconnecting said left-hand plate to said right-hand plate, spring means mounted on the other of said upstanding walls for urging said plates toward said lateral adjusting screw, said indicator block having indicator projections disposed directly adjacent said horizontal slideway for indicating the position of said razor blade with respect to said slideway, a vertical adjusting screw passing through said front spacer block, a vertical adjusting screw link bar having one end connected to said vertical adjusting screw and the other end pivotally connected to said rear eccentric hub, a hub link plate having one end connected to said rear eccentric hub and having the other end connected to said front eccentric hub, movement of said vertical adjusting screw lowers or raises said right-hand and lefthand plates, thereby lowering or raising said razor blade.

13. Apparatus according to claim 7 wherein said means mounting said razor blade is constrained to move in linear reciprocating motion during operation of sad rewind machine.

14. Apparatus according to claim 9 wherein said means mounting said razor blade is constrained to move in linear reciprocating motion during operation of said rewind machine.

UNITED STATES PATENT OFFICE CERTIFICATE OF CQRRECTION Patent No. 031 3 Dated August 8, 1972 GERRIT DEGELLEKE ET AL Inventor(s)- It is certified that error appears in the above-identified patent and that said Letters Patent are hereby corrected as shown below;

Column 2, line 54,-,v "web 14" should be a web l4 Column 3, line 2, "pneumatic cylinder" should be --a pneumatic cylinder- Column 3, line 18, "25" shouldbe --52--;

Column 4, line 58,, "an eccentric hub's" should be -on the eccentric hub s Column 6, line 65, "ed" should be end--.

Signed and sealed this 6th day of March 1973.

(SEAL) Attest:

EDWARQALFLETCHERJR. ROBERT GC JTTSCHALK Attesting Officer Commissioner of Patents 

1. In a rewind machine having a main frame, a web supply roll, rewind roll means, a horizontal slideway mounted on said main frame, a backup roll, the combination comprising a plurality of slitting assemblies being adjustably mounted on said slideway adjacent said backup roll, each of said slitting assemblies having cutting means, means for adjusting the vertical position of said cutting means, vernier means for adjusting the lateral position of said cutting means, and means for reciprocating said cutting means in linear motion during operation.
 2. In a rewind machine having a main frame, a web supply roll, rewind roll means, a horizontal slideway mounted on said main frame, a backup roll, the combination comprising a plurality of slitting assemblies adjustably mounted on said slideway adjacent said backup roll, each of said slitting assemblies including a bracket, a front eccentric hub pivot pin mounted on said bracket and a rear eccentric hub pivot pin mounted on said bracket, a front eccentric hub eccentrically mounted on said front eccentric hub pivot pin and a rear eccentric hub eccentrically mounted on said rear eccentric hub pivot pin, plate means mounted on said eccentric hubs, a razor blade mounted on said plate means, a vertical adjusting screw, a vertical adjusting screw link bar having one end connected to said vertical adjusting screw and the other end pivotally connected to said rear eccentric hub, a hub link plate having one end connected to said rear eccentric hub and having the other end connected to said front eccentric hub, movement of said vertical adjusting screw lowers or raises said plate means, thereby lowering or raising said razor blade.
 3. Apparatus according to claim 2 further comprising a lateral adjusting screw mounted on said bracket to engage said plate means for laterally adjusting the position of said razor blade.
 4. Apparatus according to claim 2 further comprising a fluid piston and cylinder assembly interposed between said slideway and said main frame to control pivotal movement of said slideway.
 5. In a rewind machine having a main frame, a web supply roll, rewind roll means, a horizontal slideway mounted on said main frame, a backup roll, the combination comprising a plurality of slitting assemblies being adjustably mounted on said slideway adjacent said backup roll, each of said slitting assemblies including a bracket, a front eccentric hub pivot pin mounted on said bracket and a rear eccentric hub pivot pin mounted on said bracket, a front eccentric hub eccentrically mounted on said front eccentric hub pivot pin and a rear eccentric hub eccentrically mounted on said rear eccentric hub pivot pin, a right-hand plate mounted on said eccentric hubs and a spaced left-hand plate mounted on said eccentric hubs, a razor blade, means mounting said razor blade between said plates, a lateral adjusting screw mounted on one side of said bracket to engage said left-hand plate, a slit strip width indicator block fixedly interconnecting said left-hand plate to said right-hand plate, spring means mounted on the other side of said bracket for urging said plates toward said lateral adjusting screw, said indicator block having indicator projections disposed directly adjacent said horizontal slideway for indicating the position of said razor blade with respect to said slideway, a vertical adjusting screw passing through said front spacer block, a vertical adjusting screw link bar having one end connected to said vertical adjusting screw and the other end pivotally connected to said rear eccentric hub, a hub link plate having one end connected to said rear eccentric hub and having the other end Connected to said front eccentric hub, movement of said vertical adjusting screw lowers or raises said right-hand and left-hand plates, thereby lowering or raising said razor blade.
 6. In a rewind machine having a main frame, a web supply roll, rewind roll means, a horizontal slideway mounted on said main frame, a backup roll, the combination comprising a plurality of slitting assemblies being adjustably mounted on said slideway adjacent said backup roll, each of said slitting assemblies including a bracket, a front eccentric hub pivot pin mounted on said bracket and a rear eccentric hub pivot pin mounted on said bracket, a front eccentric hub eccentrically mounted on said front eccentric hub pivot pin and a rear eccentric hub eccentrically mounted on said rear eccentric hub pivot pin, a right-hand plate mounted on said eccentric hubs and a spaced left-hand plate mounted on said eccentric hubs, a razor blade, means mounting said razor blade between said plates, a vertically extending oscillating actuating plate pivotally mounted on said left-hand plate, means connecting said oscillating actuating plate to said means mounting said razor blade, a transversely extending oscillating shaft having a longitudinally extending slot, the bottom of said oscillating actuating plate having a knob fitable in said longitudinal extending slot, means for reciprocating said oscillating shaft, a vertical adjusting screw, a vertical adjusting screw link bar having one end connected to said vertical adjusting screw and the other end pivotally connected to said rear eccentric hub, a hub link plate having one ed connected to said rear eccentric hub and having the other end connected to said front eccentric hub, movement of said vertical adjusting screw lowers or raises said right-hand and left-hand plates, thereby lowering or raising said razor blade.
 7. In a rewind machine having a main frame, a web supply roll, rewind roll means, a horizontal slideway mounted on said main frame, a backup roll, the combination comprising a plurality of slitting assemblies being adjustably mounted on said slideway adjacent said backup roll, each of said slitting assemblies including a bracket, a front eccentric hub pivot pin mounted on said bracket and a rear eccentric hub pivot pin mounted on said bracket, a front eccentric hub eccentrically mounted on said front eccentric hub pivot pin and a rear eccentric hub eccentrically mounted on said rear eccentric hub pivot pin, plate means mounted on said eccentric hubs, a razor blade, means mounting said razor blade on said plate means, a vertically extending oscillating actuating plate pivotally mounted on said plate means, means connecting said oscillating actuating plate to said means mounting said razor blade, a transversely extending oscillating shaft having a longitudinally extending slot, the bottom of said oscillating actuating plate having a knob fitable in said longitudinal extending slot, means for reciprocating said oscillating shaft, a lateral adjusting screw mounted on one side of said bracket to engage said plate means for laterally adjusting the position of said razor blade.
 8. Apparatus according to claim 7 further comprising an indicator block mounted on said plate means and having indicator projections disposed directly adjacent said horizontal slideway for indicating the position of said razor blade with respect to said slideway.
 9. In a rewind machine having a main frame, a web supply roll, rewind roll means, a horizontal slideway mounted on said main frame, a backup roll, the combination comprising a plurality of slitting assemblies being adjustably mounted on said slideway adjacent said backup roll, each of said slitting assemblies including a bracket, plate means mounted on said bracket, a razor blade, means mounting said razor blade on said plate means, a vertically extending oscillating actuating plate pivotally mounted on said plate means, a retaining plate fixedly attached to said oscillating actuating plate, said meAns mounting said razor blade having a vertically extending slot, a locking pin engageable in said slot, a housing fixedly attached to said oscillating actuating plate, said locking pin having a knob at the outside end thereof for removing said pin from said slot, spring means mounted in said housing for urging said pin into said slot, a transversely extending oscillating shaft having a longitudinally extending slot, the bottom of said oscillating actuating plate having a knob fitable in said longitudinal extending slot and means for reciprocating said oscillating shaft.
 10. A slitting assembly comprising a bracket having upstanding side walls, a front eccentric hub pivot pin mounted on said side walls and a rear eccentric hub pivot pin mounted on said side walls, a front eccentric hub eccentrically mounted on said front eccentric hub pivot pin and a rear eccentric hub eccentrically mounted on said rear eccentric hub pivot pin, a right-hand plate mounted on said eccentric hubs and a spaced left-hand plate mounted on said eccentric hubs, a razor blade holder plate, a razor blade clamp plate, a razor blade mounted between said razor blade holder plate and said razor blade clamp plate, a razor oscillating guide plate fixedly attached to said razor blade holder plate, said left-hand plate having a recess for receiving said razor oscillating guide plate for reciprocating sliding movement, a spring fixedly attached to said right-hand plate and resiliently engageable with said razor blade holder plate to urge said razor blade holder plate towards said left-hand plate, a vertically extending oscillating actuating plate pivotally mounted on said left-hand plate, said razor blade holder plate having a vertically extending slot, a locking pin engageable in said slot, means mounting said locking pin on said oscillating actuating plate, means for oscillating said oscillating actuating plate, a lateral adjusting screw mounted on one of said upstanding side walls to engage said left-hand plate, a slit strip width indicator block fixedly interconnecting said left-hand plate to said right-hand plate, spring means mounted on the other of said upstanding walls for urging said plates toward said lateral adjusting screw, said indicator block having indicator projections disposed directly adjacent said horizontal slideway for indicating the position of said razor blade with respect to said slideway, a vertical adjusting screw, a vertical adjusting screw link bar having one end connected to said vertical adjusting screw and the other end pivotally connected to said rear eccentric hub, a hub link plate having one end connected to said rear eccentric hub and having the other end connected to said front eccentric hub, movement of said vertical adjusting screw lowers or raises said right-hand and left-hand plates, thereby lowering or raising said razor blade.
 11. In a rewind machine having a main frame, a web supply roll, rewind roll means, a horizontal slideway mounted on said main frame, a backup roll, the combination comprising a plurality of slitting assemblies being adjustably mounted on said slideway adjacent said backup roll, each of said slitting assemblies including a bracket having upstanding side walls, a front eccentric hub pivot pin mounted on said side walls and a rear eccentric hub pivot pin mounted on said side walls, a front eccentric hub eccentrically mounted on said front eccentric hub pivot pin and a rear eccentric hub eccentrically mounted on said rear eccentric hub pivot pin, a right-hand plate mounted on said eccentric hubs and a spaced left-hand plate mounted on said eccentric hubs, a razor blade holder plate, a razor blade clamp plate, a razor blade mounted between said razor blade holder plate and said razor blade clamp plate, a razor oscillating guide plate fixedly attached to said razor blade holder plate, said left-hand plate having a recess for receiving said razor oscillating guide plate for reciprocating sliding movement, a spring fixedly attached to said right-haNd plate and resiliently engageable with said razor blade holder plate to urge said razor blade holder plate towards said left-hand plate, a vertically extending oscillating actuating plate pivotally mounted on said left-hand plate, said razor blade holder plate having a vertically extending slot, a locking pin engageable in said slot, a housing fixedly attached to said oscillating actuating plate, said locking pin having a knob at the outside end thereof for removing said pin from said slot, spring means mounted in said housing for urging said pin into said slot, a transversely extending oscillating shaft having a longitudinally extending slot, the bottom of said oscillating actuating plate having a knob fitable in said longitudinal extending slot, a collar fixedly attached to said oscillating shaft, an electric motor, linkage means interconnecting said collar to said electric motor for reciprocating said oscillating shaft, a lateral adjusting screw mounted on one of said upstanding side walls to engage said left-hand plate, a slit strip width indicator block fixedly interconnecting said left-hand plate to said right-hand plate, spring means mounted on the other of said upstanding walls for urging said plates toward said lateral adjusting screw, said indicator block having indicator projections disposed directly adjacent said horizontal slideway for indicating the position of said razor blade with respect to said slideway, a vertical adjusting screw passing through said front spacer block, a vertical adjusting screw link bar having one end connected to said vertical adjusting screw and the other end pivotally connected to said rear eccentric hub, a hub link plate having one end connected to said front eccentric hub and having the other end connected to said front eccentric hub, movement of said vertical adjusting screw lowers or raises said right-hand and left-hand plates, thereby lowering or raising said razor blade.
 12. In a rewind machine having a main frame, a web supply roll, rewind roll means, a horizontal slideway mounted for pivotal movement, a driven backup roll, the combination comprising a plurality of slitting assemblies being adjustably mounted on said slideway adjacent said backup roll, a fluid piston and cylinder assembly interposed between said slideway and said frame to control the pivotal movement of said slideway, each of said slitting assemblies including a bracket having upstanding side walls, a front eccentric hub pivot pin mounted on said side walls and a rear eccentric hub pivot pin mounted on said side walls, a front eccentric hub eccentrically mounted on said front eccentric hub pivot pin and a rear eccentric hub eccentrically mounted on said rear eccentric hub pivot pin, a right-hand plate mounted on said eccentric hubs and a spaced left-hand plate mounted on said eccentric hubs, a front spacer block interposed between said right-hand and left-hand plates and a rear spacer block interposed between said right-hand and left-hand plates, a razor blade holder plate, a razor blade clamp plate, a razor blade mounted between said razor blade holder plate and said razor blade clamp plate, a razor oscillating guide plate fixedly attached to said razor blade holder plate, said left-hand plate having a recess for receiving said razor oscillating guide plate for reciprocating sliding movement, a spring fixedly attached to said right-hand plate and resiliently engageable with said razor blade holder plate to urge said razor blade holder plate towards said left-hand plate, a vertically extending oscillating actuating plate pivotally mounted on said left-hand plate, a retaining plate fixedly attached to said oscillating actuating plate, said razor blade holder plate having a vertically extending slot, a locking pin engageable in said slot, a housing fixedly attached to said oscillating actuating plate, said locking pin having a knob at the outside end thereof for removing said pin from said slot, spring means mounted in said housing for urging said pin into sAid slot, a transversely extending oscillating shaft having a longitudinally extending slot, the bottom of said oscillating actuating plate having a knob fitable in said longitudinal extending slot, a collar fixedly attached to said oscillating shaft, an electric motor, linkage means interconnecting said collar to said electric motor for reciprocating said oscillating shaft, a lateral adjusting screw mounted on one of said upstanding side walls to engage said left-hand plate, a slit strip width indicator block fixedly interconnecting said left-hand plate to said right-hand plate, spring means mounted on the other of said upstanding walls for urging said plates toward said lateral adjusting screw, said indicator block having indicator projections disposed directly adjacent said horizontal slideway for indicating the position of said razor blade with respect to said slideway, a vertical adjusting screw passing through said front spacer block, a vertical adjusting screw link bar having one end connected to said vertical adjusting screw and the other end pivotally connected to said rear eccentric hub, a hub link plate having one end connected to said rear eccentric hub and having the other end connected to said front eccentric hub, movement of said vertical adjusting screw lowers or raises said right-hand and left-hand plates, thereby lowering or raising said razor blade.
 13. Apparatus according to claim 7 wherein said means mounting said razor blade is constrained to move in linear reciprocating motion during operation of sad rewind machine.
 14. Apparatus according to claim 9 wherein said means mounting said razor blade is constrained to move in linear reciprocating motion during operation of said rewind machine. 